--Joint Venture Expects To Accelerate Expansion Throughout Peru--

SAN MARCOS, CA — September 19, 2011 — Omnitek Engineering Corporation (OTC BB: OMTK) today announced Pegaco Bus has acquired a 50 percent ownership position in the company’s Omnitek Peru joint venture, a partnership offering conversion services for diesel engines to operate on natural gas, and a new order for conversion kits and related components to meet increased demand in Peru.  Additional terms were not disclosed.

            Omnitek Engineering will retain its current 20 percent ownership position in the joint venture conversion operation in Peru and realize 100 percent of the conversion kit sales to this entity.

Based in Lima, Peru, the joint venture has operated as Omnitek Peru S.A.C. since its establishment in 2009.

             “Peru, with an excellent natural gas infrastructure and a commitment to reducing carbon emissions, continues to represent an important growth market for our company.  Peruvian bank loans are readily available to fleet operators for conversions and diesel engine re-powering is receiving strong interest from fleet operators – especially with a less than a one year return on investment,” said Werner Funk, president and chief executive officer of Omnitek Engineering Corporation.

            “The additional liquidity provided by Pegaco’s investment will enable the joint venture to take advantage of an incredibly large market for truck and bus conversions in Peru -- a market that industry sources estimate will reach at least 20,000 bus conversions and 50,000 truck conversions in the next few years,” said Javier Ojeda, general manager of Omnitek Peru.

“Omnitek Engineering’s technology offers an economical solution to Peruvian bus operators who cannot afford to purchase new natural gas buses.  We look forward to working with Omnitek Peru and accelerating the adaption of natural gas,” said Jorge Luis Maldonado, chief executive officer of Pegaco.

            Separately, Omnitek Engineering said its East Coast partner is currently operating an Omnitek-converted Navistar DT466 natural gas truck engine for a mandatory 100-hour period prior to Environmental Protection Agency required emissions testing for certification of conversion kits.

About Pegaco Bus
Pegaco Bus is one of the fastest growing companies in Peru.  It is a leading dealer of CNG buses and the exclusive dealer of Kinglong of China buses, the second largest bus manufacturer in China. 

About Omnitek Engineering Corporation
Omnitek Engineering Corp. develops and sells new natural gas engines, as well as proprietary diesel-to-natural gas conversion systems -- providing global customers with innovative alternative energy and emissions control solutions that are sustainable and affordable.



Some of the statements contained in this news release discuss future expectations, contain projections of results of operations or financial condition or state other ``forward-looking'' information. These statements are subject to known and unknown risks, uncertainties, and other factors that could cause the actual results to differ materially from those contemplated by the statements. The forward-looking information is based on various factors and is derived using numerous assumptions. Important factors that may cause actual results to differ from projections include, among many others, the ability of the Company to raise sufficient capital to meet operating requirements, completion of R&D and successful commercialization of products/services, patent completion, prosecution and defense against well-capitalized competitors. These are serious risks and there is no assurance that our forward-looking statements will occur or prove to be accurate. Words such as ``anticipates,'' ``expects,'' ``intends,'' ``plans,'' ``believes,'' ``seeks,'' ``estimates,'' and variations of such words and similar expressions are intended to identify such forward-looking statements. Unless required by law, the Company undertakes no obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise.

 #      #      #